#183B69#183B69

#183B69 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.3% C 0.090 H 256.4°. Best body text is #FFFFFF at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#183B69
RGB	rgb(24, 59, 105)
HSL	hsl(214, 63%, 25%)
HSV	hsv(214, 77%, 41%)
CMYK	cmyk(77.1%, 43.8%, 0%, 58.8%)
CIE-LAB	lab(24.77, 5.01, -30.56)
CIE-LCH	lch(24.77, 30.97, 279.31°)
OKLab	oklab(35.28% -0.0212 -0.0873)
OKLCH	oklch(35.28% 0.09 256.4)
XYZ	xyz(4.4895, 4.3415, 13.9633)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B69 #694618

analogous

#186369 #183B69 #1D1869

triadic

#183B69 #69183B #3B6918

tetradic

#183B69 #691863 #694618 #18691D

square

#183B69 #691863 #694618 #18691D

split-complementary

#183B69 #691D18 #636918

monochromatic

#060E19 #0D1F37 #183B69 #23579B #2F73CD

Accessibility & contrast

On white

11.24

#183B69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#183B69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B69

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B69	#FFFFFF	#000000	##FFFFFF
##183B69	1.00	11.24	1.87	11.24
#FFFFFF	11.24	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253F6B

Deuteranopia (green-blind)

#173768

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183b69;
/* rgb */ color: rgb(24, 59, 105);
/* oklch */ color: oklch(35.3% 0.090 256.4);

Tailwind

colors: {
  custom: {
    50: '#617094',
    500: '#183b69',
    950: '#000000',
  },
}

SCSS

$custom: #183b69;
$custom-light: #617094;
$custom-dark: #000000;

JSON

{
  "hex": "#183b69",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 105
  },
  "hsl": {
    "h": 214.074,
    "s": 62.791,
    "l": 25.294
  },
  "oklch": {
    "l": 0.35275,
    "c": 0.08985,
    "h": 256.4
  },
  "luminance": 0.04342
}

Semantic roles & 50–950 ramp

primary

#183B69

secondary

#9F753E

accent

#9F42E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #183B69

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →